You can right-click the text area in the search bar to "Clear Search History"
You can also disable: Tools > Options > Privacy > History: [ ] "Remember search and form history"
See also:
* [[Clear Recent History]]
* http://kb.mozillazine.org/Search_Bar

Nope he's a real live person and that 15346 posts & 1006 answers is just since June or July when this forum software was updated and the counter started from scratch.

cor-el 15346 posts 1006 answers are you a bot or what?
Nope he's a real live person and that 15346 posts & 1006 answers is just since June or July when this forum software was updated and the counter started from scratch.

The "Search Suggestions" are not your search history.
The search suggestions are loaded in real time by querying the (Google) search engine site based on what you typed so far in the search bar.
If "Clear Search History" is grayed out then the history is cleared or disabled.

You can disable the search suggestions by right-clicking the text field in the search bar and remove the mark before "Show Suggestions".

Make sure that you do not get confused by [[Search suggestions]].
The "Search Suggestions" are not your search history.<br />
The search suggestions are loaded in real time by querying the (Google) search engine site based on what you typed so far in the search bar.<br />
If "Clear Search History" is grayed out then the history is cleared or disabled.
You can disable the search suggestions by right-clicking the text field in the search bar and remove the mark before "Show Suggestions".